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The use of referential gestures in ravens (Corvus corax) in the wild

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  • Simone Pika

    (Max Planck Institute for Ornithology, Research Group 'Comparative Gestural Signalling', Eberhard-Gwinner-Straße, Geesehouse)

  • Thomas Bugnyar

    (University of Vienna, 1010 Vienna, Austria.)

Abstract

Around the age of one year, human children start to use gestures to coordinate attention towards a social partner and an object of mutual interest. These referential gestures have been suggested as the foundation to engage in language, and have so far only been observed in great apes. Virtually nothing is known about comparable skills in non-primate species. Here we record thirty-eight social interactions between seven raven (Corvus corax) dyads in the Northern Alps, Austria during three consecutive field seasons. All observed behaviours included the showing and/or offering of non-edible items (for example, moss, twigs) to recipients, leading to frequent orientation of receivers to the object and the signallers and subsequent affiliative interactions. We report evidence that the use of declarative gestures is not restricted to the primate lineage and that these gestures may function as 'testing-signals' to evaluate the interest of a potential partner or to strengthen an already existing bond.

Suggested Citation

  • Simone Pika & Thomas Bugnyar, 2011. "The use of referential gestures in ravens (Corvus corax) in the wild," Nature Communications, Nature, vol. 2(1), pages 1-5, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1567
    DOI: 10.1038/ncomms1567
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